Offset Picture Frame Hanger for Minimal Wall Clearance
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Solution Overview
Problem
Existing picture frame hangers project significant portions behind the frame, failing to minimize the space between the frame and the wall, and often require complex constructions or specific frame configurations.
Innovation Solution
A Z-shaped hanger with a recessed design that attaches to the frame's lateral rails, using a saw tooth edge to minimize the space between the frame and the wall by positioning the hanger's operative portion internally within the frame's cavity, allowing for secure attachment with minimal projection behind the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If traditional hangers are used, then the frame can be securely attached to the wall, but the hanger projects significantly behind the frame, increasing the space between the frame and the wall
Solution Approach 1:
The hanger is nested within the frame cavity, with the main body positioned inside the frame's internal space. This allows the hanger to be concealed within the frame structure, minimizing the projection behind the frame while maintaining attachment functionality through the bridging portion that extends to the rear surface.
Solution Approach 2:
The hanger utilizes the depth dimension of the frame cavity to position its main body inward, rather than projecting outward. By arranging the hanger body within the frame's thickness and using a bridging portion to reach the rear surface, the design transforms the attachment approach from external projection to internal positioning, reducing the space between frame and wall.
2Length of stationary object
If the hanger is recessed within the frame cavity, then the space between frame and wall is minimized, but the hanger structure becomes more complex
Solution Approach 1:
The hanger is formed from a thin sheet of metal that can be bent and shaped into the required configuration. This thin-film approach allows the creation of a recessed hanger body with connecting tabs and bridging portions without requiring complex multi-component assemblies, maintaining manufacturing simplicity while achieving the desired geometry.
Solution Approach 2:
The hanger integrates multiple functional elements into a single unified structure: the hanger body, connecting tabs for attachment to the rear surface, and the bridging portion are all formed as one piece from a single sheet of metal. This merging of components simplifies the overall construction while achieving the recessed configuration.
3Volume of moving object
If the hanger uses a thin sheet of metal construction, then the hanger can be recessed within the frame, but the attachment strength may be reduced
Solution Approach 1:
The hanger utilizes the inherent strength properties of metal sheet material, leveraging its tensile and shear strength to provide secure attachment. The metal's material properties compensate for the thin cross-section, allowing the hanger to maintain both low volume and sufficient attachment strength when properly configured with connecting tabs and bridging portions.
Solution Approach 2:
The hanger design concentrates structural strength at critical locations: the connecting tabs that attach to the rear surface and the bridging portion that spans to the front. By optimizing the local geometry and thickness at these key attachment points, the hanger achieves adequate strength despite the overall thin construction, distributing stress appropriately across the structure.
Data Source
AI summary
A picture frame hanger includes a member stamped of thin sheet having a thickness on the order of 0.05″ and includes a lower flat depending portion arranged in a first vertical plane. At least one connecting portion or tab is provided that is horizontally offset from the depending portion and arranged in a second vertical plane parallel to the first plane. An integral bridging portion is arranged in a horizontal plane or normal to the first and second planes spaced a distance less than a depth of the upper rail. The connecting portion attaches the hanger to the upper rail rear surface. The depending portion is offset by the bridging portion to position the depending portion internally of the frame cavity spaced from the wall. The frame can be supported on a wall or surface while being spaced from the wall by only the thickness of the connecting portions.